There are TAB systems available for a number of non-stringed instruments. There's a very useful site at http://www.barefootiano.com/ for harmonica - just click on the link to 'harmonica riffs' to see and hear a whole range of styles and examples. There'll be lots of other sites that will have their own examples of exotic bends and slurs and rolls etc, but this is a good enough example of stuff that a beginner could learn from Day 1.

The Yet Another Digital Tradition site allows you to print the dots plus TAB notation for whistle and (as I recall) lap dulcimer. I've done proof of concept work which can extend this concept to Woodwind. Neil Jennings has a prog called HARMONY which produces TAB for melodeons.

Probably too much information here for guitar players.

Regards, John